EP0344923B1 - Vehicle suspension system - Google Patents

Vehicle suspension system Download PDF

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Publication number
EP0344923B1
EP0344923B1 EP89304550A EP89304550A EP0344923B1 EP 0344923 B1 EP0344923 B1 EP 0344923B1 EP 89304550 A EP89304550 A EP 89304550A EP 89304550 A EP89304550 A EP 89304550A EP 0344923 B1 EP0344923 B1 EP 0344923B1
Authority
EP
European Patent Office
Prior art keywords
damping
wheel
suspension system
damping mass
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89304550A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0344923A1 (en
Inventor
David E. Hanson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bose Corp
Original Assignee
Bose Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bose Corp filed Critical Bose Corp
Priority to AT89304550T priority Critical patent/ATE81620T1/de
Publication of EP0344923A1 publication Critical patent/EP0344923A1/en
Application granted granted Critical
Publication of EP0344923B1 publication Critical patent/EP0344923B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/104—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B9/00—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces
    • B60B9/005—Comprising a resilient hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • B60G13/16—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dynamic absorbers as main damping means, i.e. spring-mass system vibrating out of phase
    • B60G13/18—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dynamic absorbers as main damping means, i.e. spring-mass system vibrating out of phase combined with energy-absorbing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G3/00—Resilient suspensions for a single wheel
    • B60G3/01—Resilient suspensions for a single wheel the wheel being mounted for sliding movement, e.g. in or on a vertical guide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/30—In-wheel mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/423—Rails, tubes, or the like, for guiding the movement of suspension elements
    • B60G2204/4232—Sliding mounts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/50—Constructional features of wheel supports or knuckles, e.g. steering knuckles, spindle attachments

Definitions

  • the present invention relates in general to wheel damping and more particularly concerns novel apparatus and techniques for damping a wheel substantially in its plane, such as internally of the wheel to reduce torques about the wheel center and accommodate the damping mass in a convenient location.
  • US-A-2955841 discloses a wheel hop damper according to the preamble of claim 1 in which arcuate cast iron weights are able to move in arcs within a wheel under the action of springs.
  • a vehicle suspension system for supporting a suspended mass comprising a vehicle body, the suspension system comprising: an unsuspended mass comprising a wheel rotatable about a wheel axis in a rotation plane perpendicular to the wheel axis; damping mass means located to embrace the rotation plane and disposed about the wheel axis for damping vibration of the wheel; characterised in that: the damping mass means is translatable relative to the wheel parallel to a non-rotating damping mass axis passing through the wheel axis and in the rotation plane.
  • the invention is used in a vehicle suspension system having an actuator connected between the suspended mass, such as the body subframe, and the unsuspended mass, such as the wheel.
  • FIGS. 1A, 1B and 1C there are shown diagrammatic representations of suspension systems having the damping mass outside, inside and within the wheel, respectively.
  • a wheel and hub 11 carries a tire 12 and rotates about a wheel axle 13.
  • a control arm 14 is pivotally connected to the wheel support at one end 14A, to the vehicle body, such as the differential housing, at the other end 14B and to the actuator in the middle at 14C.
  • the actuator 15 includes actuator body 15A and a spring 15B to support the steady-state load or suspended mass 17, in this example, the vehicle body, between control arm 14 and the suspended body mass 17 of the vehicle.
  • a damping mass 21 is shown centered about the wheel axis 13.
  • the force F exerted on tire 12 by the ground from damping mass 21 may be divided into a component R 1 passing through the damping mass and a force R 2 passing through end 14B such that the sum of the moments of these forces about the wheel center is substantially zero.
  • both the forces R 1 and R 2 are downward.
  • the reaction force R 2 is directed upward.
  • an advantage of the approach according to the invention is that to achieve a given effective damping, the damping mass 21 located within the wheel as shown in FIG. 1C may be less than when positioned as in FIG. 1B. Furthermore, the mechanical packaging is improved with the arrangement of FIG. 1C.
  • Wheel and hub 11 includes a wheel rim 11A.
  • a stationary mass support platform 22 carries damping mass 21 and is formed with an inwardly extending arm 22A having a pivot 22B pivotally connecting platform 22 to actuator shaft 23 and a pivot 22C pivotally connecting platform arm 22A to control arm 24.
  • Hub 11 includes a flange 11C extending from inner race 11D of wheel bearing 26 whose outer race 22D comprises mass support 22.
  • Hub flange 11C mates with (by spline) and surrounds wheel spindle 27 connected by U joint 31 to axle 32 connected at the other end by U joint 33 to brake support member 34 that carries brake disk 35 and is connected to the differential housing drive gears 36.
  • the other end of control arm 24 is pivotally connected at 37A to body subframe 37.
  • Actuator body 41 is pivotally connected at 37B to body subframe 37 to actuate actuator arm 23 and counter forces exerted by the road on tire 12.
  • Damping mass 21 is of generally ogival shape as shown formed with a slot 21A having its length perpendicular to the long horizontal axis of the ogival cross section of damping mass 21.
  • Damping mass 21 rests on centering springs 42 situated between bearings 43 and fixed shaft retainers 44 through which pass hollow shafts 45 connected to upper and lower chambers 47 filled with damping fluid and capped by end plugs 46.
  • damping mass 21 is free to move vertically, but restrained by bearing 26 from moving horizontally. Vertical movement of damping mass 21 produces fluid displacement across damping orifice 48 to convert vibratory energy from damping mass 21 into frictional heat dissipated at orifice 48.
  • FIG. 4 there is shown a perspective view of the damping mass control system with edges of damping mass 21 shown in dash-dotted lines to illustrate the structure just described with caps 46 omitted.
  • FIG. 5 there is shown a diagrammatic plan view, partially in section, of still another form of the invention in which the damping fluid also comprises damping mass.
  • Concentric support shaft 51 is attached to axle hub 52 by mount 53.
  • Damper cylinder 54 is fitted over concentric shaft 51 and ride-in shaft bearings 55.
  • Orifice plate 56 provides additional support.
  • Springs 57 center damper cylinder 54 under static conditions.
  • Damper cap 58 is fitted to damper cylinder 54 and sealed by welding or other suitable means.
  • Fill port 59 admits damping fluid 60 through back filling as air is evacuated therethrough.
  • damping fluid 60 is pumped from one damper chamber 62 to the other through damping orifice 62A.
  • Shaft seals 63 prevent leakage of damping fluid 60 past shaft bearing 55.
  • a cylinder seal 64 ensures flow of damping fluid 60 through damping orifice 62.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vehicle Body Suspensions (AREA)
EP89304550A 1988-05-16 1989-05-05 Vehicle suspension system Expired - Lifetime EP0344923B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89304550T ATE81620T1 (de) 1988-05-16 1989-05-05 Fahrzeugaufhaengungssystem.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US19451588A 1988-05-16 1988-05-16
US194515 1988-05-16

Publications (2)

Publication Number Publication Date
EP0344923A1 EP0344923A1 (en) 1989-12-06
EP0344923B1 true EP0344923B1 (en) 1992-10-21

Family

ID=22717897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89304550A Expired - Lifetime EP0344923B1 (en) 1988-05-16 1989-05-05 Vehicle suspension system

Country Status (7)

Country Link
EP (1) EP0344923B1 (enrdf_load_stackoverflow)
JP (1) JP3022913B2 (enrdf_load_stackoverflow)
AT (1) ATE81620T1 (enrdf_load_stackoverflow)
CA (1) CA1327215C (enrdf_load_stackoverflow)
DE (1) DE68903245T2 (enrdf_load_stackoverflow)
ES (1) ES2035559T3 (enrdf_load_stackoverflow)
GR (1) GR3006486T3 (enrdf_load_stackoverflow)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2705418B1 (fr) * 1993-05-14 1995-08-04 Hutchinson Dispositif d'atténuation des bruits de roulement des véhicules.
DE19755656C1 (de) * 1997-12-15 1999-08-26 Fkfs Forschungsinstitut Fuer K Fahrzeugfederungssystem
DE29818444U1 (de) * 1998-10-16 2000-02-24 Müller, Gerd, Dipl.-Ing., 66459 Kirkel Fahrzeugrad
US6443273B1 (en) * 2001-08-24 2002-09-03 Bell Helicopter Textron, Inc. Compact vibration cancellation device
DE10254632B4 (de) * 2002-11-22 2012-10-25 Volkswagen Ag Passiver Schwingungstilger für die Aufhängung eines Kraftfahrzeugrades
US6945541B2 (en) * 2003-01-21 2005-09-20 Bose Corporation Vehicle suspension
US7703780B2 (en) 2003-09-30 2010-04-27 Toyota Jidosha Kabushiki Kaisha Wheel supporting apparatus improving ride comfort of vehicle
JP4113506B2 (ja) * 2003-09-30 2008-07-09 トヨタ自動車株式会社 車輪支持装置
DE102008019974B4 (de) * 2008-04-21 2014-04-30 Herbert Jekat Radfelgeninnenraum für Kraftfahrzeugräder
KR101269928B1 (ko) * 2008-11-10 2013-05-31 주식회사 만도 휠 내장형 모터를 갖춘 차량
GB2539866A (en) * 2015-02-09 2017-01-04 Victor Newson Kenneth Wheel within the wheel
US11828339B1 (en) 2020-07-07 2023-11-28 Apple Inc. Vibration control system
WO2022173802A1 (en) 2021-02-10 2022-08-18 Gene Hawkins Active suspension control system for a motor vehicle
CN113246682B (zh) * 2021-05-31 2024-08-16 山东理工大学 一种车用环形时滞反馈控制动力吸振器
EP4319998A1 (en) 2021-06-07 2024-02-14 Apple Inc. Mass damper system
US12251973B2 (en) 2022-06-10 2025-03-18 Apple Inc. Vibration absorber
US12168375B1 (en) 2023-01-26 2024-12-17 Apple Inc. Motion control system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537479A (en) * 1946-02-12 1951-01-09 Motte Charles Marius Combined suspension hub and shock absorber for vehicle wheels
US2955841A (en) * 1956-05-31 1960-10-11 Gen Motors Corp Wheel hop damper
US2901239A (en) * 1956-09-10 1959-08-25 Bendix Aviat Corp Suspension system
FR1409520A (fr) * 1963-08-17 1965-08-27 Daimler Benz Ag Suspension élastique, en particulier pour voitures automobiles
JPS5760963A (en) * 1980-09-30 1982-04-13 Toyo Umpanki Co Ltd Loader for truck, etc. to car
JPS6227242U (enrdf_load_stackoverflow) * 1985-08-02 1987-02-19
JPS6264603U (enrdf_load_stackoverflow) * 1985-10-14 1987-04-22
JPS63124502U (enrdf_load_stackoverflow) * 1987-02-09 1988-08-15

Also Published As

Publication number Publication date
DE68903245D1 (de) 1992-11-26
ES2035559T3 (es) 1993-04-16
DE68903245T2 (de) 1993-09-16
EP0344923A1 (en) 1989-12-06
ATE81620T1 (de) 1992-11-15
JP3022913B2 (ja) 2000-03-21
CA1327215C (en) 1994-02-22
JPH0237012A (ja) 1990-02-07
GR3006486T3 (enrdf_load_stackoverflow) 1993-06-21

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